On Tue, 6 Sep 2005, Daniel Smith wrote: > My question is, how do I get the information out of these file fields > into some sort of delimited file? Any suggestions?
Your question is "how do I poke at the EXIF data in a JPEG image"? JPEGs store metadata -- file size, file date, camera make, camera model, date & time, resolution (width x height), whether a flash was used, focal length (mm), exposure time, aperture (f/stop), ISO speed, etc -- in a section called the EXIF header. You're looking for a way to access this data. Try a CPAN search: http://search.cpan.org/search?query=EXIF&mode=all This is the first hit: http://search.cpan.org/~ccpro/Image-EXIF-1.00.3/EXIF.pm As noted in another reply, you can also use Image::Info for a more generic version of the same information: http://search.cpan.org/~gaas/Image-Info-1.16/lib/Image/Info.pm And as another person noted, it helps to know what platform you're talking about. On POSIXy systems (Linux, OSX, Solaris, BSD, etc), the `jhead` command line tool provides quick access to EXIF data: $ jhead ~/south_tower_invisible_beyond_fog.jpg File name : /Users/cdevers/south_tower_invisible_beyond_fog.jpg File size : 859667 bytes File date : 2005:07:17 13:40:20 Camera make : OLYMPUS OPTICAL CO.,LTD Camera model : X-2,C-50Z Date/Time : 2005:07:17 02:49:30 Resolution : 1920 x 2560 Flash used : No Focal length : 7.8mm Exposure time: 0.0031 s (1/320) Aperture : f/5.6 ISO equiv. : 80 Whitebalance : Auto Metering Mode: matrix Exposure : Creative Program (based towards depth of field $ Etc. Image::Exif will let you examine the same data in a Perl script. -- Chris Devers x IÕ¼¡.þC
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